Some of the advantages of blue revolution in India are as follows:
Blue revolution means the remarkable growth in intensive aquaculture package programme to increase the production of fish and marine products.
Advantages of Blue Revolution:
i. Providing food security
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ii. Providing nutrition security
iii. Providing employment, fishing, aquaculture and a host of allied activities are a source of livelihood to over 14 million people in India
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iv. A major foreign exchange earner
Unfortunately, since the advent of more intensive modern industrial aquaculture, serious environmental and social issues have developed. Millions of indigenous coastal people are being adversely affected
i. Among the most serious problems is the degradation and loss of natural coastal resources.
ii. Local waters and species may also become contaminated with antibiotics, herbicides and other medicines that are be used in aquaculture ponds.
iii. Accumulation of organic matter, both in the form of unconsumed feed and faeces. When aquacultural activities are conducted directly in the marine or brackish environment lead to a process of eutrophication, with associated depletion of oxygen in the water bodies.
iv. The loss of mangrove swamps and wetlands by conversion their area into shrimp farms will lead to exposure of coastal areas to erosion, flooding, increased storm damage, altered natural drainage patterns, increased salt intrusion and removed critical habitats for aquatic and terrestrial species.
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v. Outbreaks of pathogens are also a major risk factor in commercial aquaculture with millions of dollars lost annually. Pathogens cannot only wipe out a cultured fishery but they also can infect nearby wild species, which can result in a collapse of these wild fisheries.